Datasheet

Shield, Lights, Servo Motors • Chapter 2
Robotics with the BOE Shield-Bot • 67
 Save the modified sketch and run it on the Arduino.
 Verify that the servo connected to pin 13 now rotates the other direction, which
should be counterclockwise, at about 50 to 60 RPM.
Example Sketch: RightServoClockwise
 Save LeftServoClockwise as RightServoClockwise.
 Replace all instances of
servoLeft with servoRight.
 Replace all instances of
13 with 12.
 Save and run the modified sketch and verify that the pin 12 servo is rotating
between 50 and 60 RPM clockwise.
/*
Robotics with the BOE Shield – RightServoClockwise
Generate a servo full speed clockwise signal on digital pin 12.
*/
#include <Servo.h> // Include servo library
Servo servoRight; // Declare left servo
void setup() // Built in initialization block
{
servoRight.attach(12); // Attach left signal to pin 12
servoRight.writeMicroseconds(1300); // 1.3 ms full speed clockwise
}
void loop() // Main loop auto-repeats
{ // Empty, nothing needs repeating
}
Your Turn – Right Servo Counterclockwise
 In servoRight.writeMicroseconds change (1300) to (1700).
 Save the sketch under a new name and run it on your Arduino.
 Verify that the pin 12 servo turns full-speed counterclockwise, 50–60 RPM.
Vdd (5 V)
GND (0 V)
1.7 ms 1.7 ms
20 ms
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